Knife for trimming linoleum



A. E. HENDERSON KNIFE FOR TRIMMING LINOLEUM Dec. 30, 1924. 1,521,533

Filed Aug. 20, 1923 swam W0 0 Patented Dec. 30, 1924.

UNETED STATES ARCH E. HENDERSON. OF FORT SMITH, ARKANSAS.

KNIFE FOR- TRIMMING LINOLEUM.

Application filed August 20, 1923. Serial No. 658,389.

To all whom it may concern Be it known that I, Anon E. HENDERSON, acitizen of the United States, residing at Fort Smith, in the county of Sebastian and State of Arkansas, have invented certain new and usefulImprovements in Knives for Trimming Linoleum, of which the following a specification.

My invention is a knife intended more particularly for use by the layers of linoleum or similar floor coverings and has for its object the provision of a simple tool which may be used close to a wall or in other restricted spaces without the knuckles of the user being bruised or otherwise injured. Another obect of the invention is to provide a tool of such construction that.

the blade or cutting point may be set in any desired position relative to the handle and firmly held in the set position, and a still further object of the invention is to provide a tool of such construction that the point or blade may be removed when worn out and a new point substituted therefor without requiring the provision of an entire tool. The invention is illustrated in the accompanying drawing and will be hereinafter fully set forth.

In the drawing:

Figure 1 is a side elevation of my 1mproved knife with a part broken away and in section;

Fig. 2 is a plan view illustrating the use of the knife, and

Fig. 3 is a detail section on the line of Fig. 1.

ln carrying out my invention, I employ a handle 1 which may be of any preferred form and in one end of which the tang 2 of the knife is secured, a ferrule 3 being fitted around the saidend of the handle to prevent splitting of the same in the usual manner. The tang 2 constitutes the shank or base member of the knife and is enlarged at its outer end vertically, as shown at 4:, the said enlargement 4 being formed with an eye 5 in its upper portion, which enlargement has its under or lower end corrugated or constructed with radial ribs, as indicated at 6. A link 7 is provided, and this link may be a fiat-sided bar, as illustrated, having an eye 8 at its lower edge at one end and a similar eye 9 at its opposite end at its upper edge. The eye 8 is adapted to fit under the eye .3 of the shank and its upper surface is corrugated or constructed with ribs adapted to interengage with the ribs or corrugations 6, as will be readily understood. A pivot bolt 10 is inserted through the eyes 8 and 5, and a wing nut 11 is mounted upon the upper end of the said pivot bolt to be turned home against the upper end of the eye 5 and thereby secure the link firmly in a set position relative to the shank. The blade 12 is provided at one end with an eye 13 adapted to extend under the eye 9 of the link 7, and this eye 13 is constructed with ribs or corrugations ,Ll adapted to interengage with similar ribs or corrugations on the under side of the eye 9. a pivot bolt 15 being inserted through said eyes, and a nut 16 being mounted upon the upper end of the said pivot bolt to be turned home against the eye 9 and thereby secure the blade in aset position relative to the link. The free end of the blade is constructed with a depending cutting point 17 having a cutting edge 18 on its concave lower portion in the usual manner of linoleum-trimming knives.

In use, the knife is drawn along the line of the desired cut in the usual manner so that its cutting edge 18 will penetrate and extend through the sheet of the linoleum or other floor covering and trim the same to the desired shape and size. Of course, when the cut is to be made at points removed from the wall or other fixed objects, the blade can be set in longitudinal alinement with the handle. It is more frequently necessary, however, in laying linoleum, to trim the edge "of the same close to the wall or the molding at the lower edge of the baseboard of the room or around the bottoms of fixed cupboards or other stationary objects. in such an instance. it is obviously difiicult for the user to so dispose the knife that it will make the desired out without forcing his fingers into such close proximity to the wall or other stationary object as to rub and bruise the knuckles and the back of the hand. lVith my improved tool, however, the coupling link 7 may be set in any desired angular relation to the shank and to the blade, as clearly shown in Fig. 2, and firmly secured in such position so that the blade will be parallel to the longitudinal medial line of the handle but the handle will be offset from the wall and the knife may be drawn freely along the line of the desired out without the fingers or the hand of the user coming in contact with the wall ll i of any other fixed object,- Toadjust the blade and the coupling link, it is necessary merely to loosen the retaining nuts, Whereupon the weightof the blade or the coup- .ling link, as the caseinay be, will cause it to drop from the coacting eye and permit it to be swung pivotally until it has been brought into the desired position, whereupon the nut may be again turned home and the parts will be firmly 'heldin the position in which; they have beengset. It will be readily noted that my improved tool is eX- ceedingly simple in construction and may blade and "the shank respectively resist any, tendency of'the parts to move out of ad;

- justment while in use Without requiring such a strain upon the retaining nuts as may be likely to. strip. the threads of the pivot bolt and the weight of the device will not be appreciably greater than the weight of the ordinary knives nowused so that the workmen may use my improved too-l asfree' ly as the ordinary knife is used without experiencing any fatigue. 7 .7

Having thus described the invention,-

what is claimed as'new is A tool 'for' trimming linoleum comprising a handle, an eye at the'end of the handle having its axis disposed on a radius of the handle, a coupling link having an eye at one end adapted to axially aline with the eye on the handle, an eye at the opposite end of the coupling link having its axis parallel with the aXisoI" the first-mentioned eye, a blade provided at one end-with an, eye adapted, to" ,allne ax ally wlth the-last-men illOZlGd eye interengaging elementsupon the opposed surfaces of the several eyes whereby to resist relative turnin'g'mo'vement of the eyes, pivots inserted through the' axially alined eyes, and retaining devices mounted upon said pivots whereby the blade may be secured in an oilset relation to thehandlein a plane parallel to the longitudinal plane of the handle.

In testimony whereof I aiiix my signature.

ARCH E1 HENDERSON; [a 5.1 

